Which of the following best describes a circular economy?

Step 1: Analyze the question. The question asks for the best description of a circular economy. Step 2: Evaluate each option. "A system where products are used once and then disposed of in landfills" describes a linear economy*, not a circular one. "A system focused only on recycling waste after it is created" is too narrow. While recycling is part of a circular economy, it also includes other strategies like reducing, reusing, and repairing. "A system that reduces waste by reusing, repairing, refurbishing, and recycling materials to keep them in use as long as possible" accurately describes a circular economy, which aims to minimize waste and maximize the value of resources by keeping products and materials in use. "A system where companies produce more goods to increase economic growth" describes a traditional economic model, which often leads to increased resource depletion and waste, contrary to the principles of a circular economy. Step 3: Select the best description. The third option provides the most comprehensive and accurate description of a circular economy. The final answer is A system that reduces waste by reusing, repairing, refurbishing, and recycling materials to keep them in use as long as possible.